The marriage seemed to come loose at the seams, one stitch at a time, often during the evening hour between work and dinner. She would be preparing the meal, while he kept her company in the sun room next to kitchen, usually reading the paper. At times the two would provoke each other, as couples do - about money, about holiday plans - but those exchanges often flared out quickly when he would say, simply, "O.K., you're right," and turn back to the news. "Looking back, instead of getting angry, I was doing this as a dismissive way of shutting...